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Viruses are programs or scripts and we know that programs can make the hard drive on or off also can change you bios information so viruses are able to do what you can not expect with the hardware. Virus damages not only the software, but the hardware as well. Worn out floppies, failing hard drives, user error, and poorly written programs can all cause you to lose data.

Track the virus

* The mysterious disappearance of your C: drive.
* Freezing and crashing for no reason at all.
* Documents suddenly increasing in size daily without you even changing anything in them.

There are different types of viruses including the following?

* Program viruses can infect computer programs. The virus is activated when the infected program is run. If a copy of the program is made and run on another computer it will also contract the virus.
* Boot sector viruses infect diskettes and hard disks and become active when an infected disk is used to start the computer. When a computer is re-booted or the power is on while an infected diskette is in drive A the virus will then spread to the hard disk. Because the hard disk has become infected any and all other diskettes used in the computer will endure the same fate.
* Macro viruses infect files through the macro programming capabilities of some newer programs. Macro viruses become active when an infected document is opened, and the program opening the document has its macro capabilities turned on. It then spreads to global settings for the application, so that other files or documents will become infected as they are opened. When any infected document is opened on another computer, the global settings used by that copy of the application will contract the same virus.

keep your data protected from virus

* Virus protection software that has been installed should be updated often with the latest versions and patches.
* Never take chances when opening files, simply bypass the file through updated virus checking software. If you frequently receive files and diskettes from others, you may want to scan more often – either daily or weekly.
* If you have received a virus, be sure to notify the sender because they may not be aware of it and may be spreading it to other people’s computers as well.
* Back up data regularly.
* Never share passwords or passphrases
* Do not click random links
* Beware unknown email and attachments
* Don’t download unknown software off the Internet
* Don’t propagate hoaxes or chain mail
* Log out/lock your computer
* Shut down lab/test computers
* Remove unnecessary programs
* Restrict remote access
* Frequently back up important files
* Treat sensitive data carefully
* Remove data securely
* Deploy encryption when possible

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